Disk-plow sharpener.



Patented Aug. 28,1917.

2 SIHE-ETSSHEET 1.

3m wit (7Z9 aflimweg M W BROWNING DISK PLOW SHARPEN'ER.

APPLICATION FILED APR. 18. 1917 W W W M; W. BROWNING.

DISK PLOW SHARPENER.

A PPLICATION FILED APR. 1a. 1917.

PatentedAug. 28,1917.

2 SHEETS-SHEET 2- in T.

MERBELL V7. BROWNING, OF JENNINGS, LOUISIANA.

DISK-PLOW SHARPENER.

Specification of Letters Patent.

Patented Aug. 28, 1917.

Application filed April 18, 1917. Serial No. 162,976.

T all whom it may concern.-

Be it known that I. liinnnrnn BROWN- no, a citizen of the United States,residing at Jennings, in the county of Jefferson Davis and State ofLouisana, have invented certain new and useful Improvements in Disk-PlowSharpeners, of which the following is a specification.

This invention relates to disk plow sharp- .iing devices and moreparticularly to a device or attachment which may be easily and quicklyapplied to disk plows or the like now in general use for the purpose ofsharpening the edges of said disks.

One of the objects of the present invention is to provide a device orapparatus of the above general character having relatively few partswhich will be inexpensive to manufacture. Another object is to pro videa simple and practical device of the above general character capable ofvarious adjustments in order to better cooperate with the disks at eachside of the plow.

Other objects will be in part obvious from the annexed drawings and inpart indicated in connection therewith by the following analysis of thisinvention.

This invention accordingly consists in the features of construction,combination of parts and in the unique relations of the members and inthe relative proportioning and disposition thereof; all as morecompletely outlined herein.

To enable others skilled in the art so fully to comprehend theunderlying features thereof that they may embody the same by thenumerous modifications in structure and relation contemplated by thisinvention, drawings depicting a preferred form have been annexed as apart of this disclosure, and

in such drawings, like characters of reference denote correspondingparts throughout all the views, of which Figure 1 is an enlarged planview partly 7 in section showing the complete device;

Fig. 2 is a side elevation, on a sli htly reduced scale, of the deviceshown in Fig. 1;

Fig. 3 is a detail sectional view;

Fig. 4; is a detail elevational view of one side of the sharpeningdevice; and

Fig. 5 is a detail elevational view showing the supporting frame for thesharpening device.

Referring now to the drawings in detail and more particularly to Fig. 2,denotes one of the disks of an ordinary disk plow,

harrow, or the like, which implement usually comprises a series of disksmounted upon a shaft, 11 supported in suitable bearing members 1 at eachend and carrying a platform 13 which may be loaded with stone for thepurpose of increasing the weight. Upon the bearing members or uprights12, as they will hereinafter be called, maybe secured by means ofadjustable clamps 14:, a pair of rods or shaft 11. Adjustable clampdevices 16 are mounted upon these rods and carry therebetween a rod 17parallel to the shaft 11. Upon this rod 17 is an adjusting clamp 18 fromwhich is suspended the main support 20 for the sharpening device.

It will thus be seen that this arrangement of parts permits thesharpening device to be moved along the rod 17 to a point adja cent anyof the disks. Likewise the entire rod 17 with the sharpening device maybe moved backwardly or forwardly along the rods 15 in order to properlyposition the sharpening device with respect to the periphery of thedisks 10. This arrangement may also be bodily removed from one side ofthe plow and replaced upon the other side,

for it is usually the case that the disks on one side are oppositelypositioned with respect to these on the other. In other words, theconcave surfaces of the disks face outwardly with respect to the middleof the plow.

The sharpener supported from the mcm ber 20 comprises two pivotallyconnected members 21 and 22, one of which carries an adjustablesharpening device or knife 23, while the other member 22 carries a pairof rollers 24, one above the other, as shown in Fig. 2, and anadjustable scraping plate 25. The first member 21 also carries apivoted. arm 26 provided with a roller 27 at one end engaging the disk10 and these parts may be adjusted laterally by means of slot connection 29. An arm 28 pivotally mounted at 30 upon the pivot of the twomembers 21 and 22 passes through this pivoted lever 26 and normallyurges the same outwardly by means of spring 31 whereby the roller 20always engages the disk 10. The scraping plate 25 is similarly urgedtoward the disk 10 by means of spring 32 mounted upon adjustable bolt33. It is to be noted that the plate 25 is provided with a slot 34adapted to permit a relative in and out movement.

The degree of pressure with which the scraper 25 and knife 23 engagesthe disk may be adjusted by means of the bolt 35 pivotally connected toone end of the member 21 and passing through the other member Thesprings and 37 at opposite sides thereof may be more or less compressedby means of a wing nut 38.

It is believed that the construction and method of use of the abovedevice will be clear from the above description. It may be stated,however, that the device as a whole, may be easily and quickly removedfrom the plow or applied thereto and shifted from one disk to the other,as desired, with a minimum amount of trouble. The degree of pressurewith which the knife engages the disk may be varied at will and thevarious adjustments permit the changing of the position of the knifewith respect to the disk as well.

It. is believed that the present invention which is of simple andpractical construction, reliable and efficient in use and operation, andinexpensive to manufacture, adapted to accomplish, among others, all ofthe objects and advantages herein set forth.

ll ithout further analysis, the foregoing will so fully reveal the gistof this invention that others can by applying current knowl edge readilyadapt it for various applications withoutomitting certain features that,from the standpoint of the prior art, fairly constitute essentialcharacteristics of the generic or specific aspects of this invention,and therefore such adaptations should and are intended to becomprehended within the meaning and range of equivalency of thefollowing claims.

I claim:

1. In an apparatus of the character described, a pair of rods adapted tobe adjust ably clamped to a plow frame, a second rod parallel with theaxis of the plow adjustably supported on said first mentioned rods and asharpening device supported from said second mentioned rod, saidsharpening device comprising a pair ofpivotally mount ed arms, one ofwhich carries a sharpening knife and the other a scraper, and means forurging said knife and scraper toward each other.

2. In an apparatus of the character d scribed, a pair of rods adapted tobe adjustably clamped to a plow frame, a second rod parallel with theaxis of the plow adjustably supported on said first mentioned rods and asharpening device supported from said second mentioned rod, said devicecomprising a pair of pivotally connected arms, an adjustable tensiondevice acting between the ends of said arms to urge the opposite endstoward each other, the opposite ends each carrying a roller and a fiatmember adapted to coact respectively with opposite sides of the disk.

3. In a sharpening device for disk plows, in combination, a centralsupport, an arm carried thereby, a second arm pivotally connected withthe first arm, a knife on one arm and a scraper on the other, and meansfor urging said knife and scraper into engagement with opposite sides ofthe disk of the plow.

t. In a sharpening device for disk plows, in combination, a centralsupport, an arm carried thereby, a second arm pivotally connected withthe first arm, a knife on one arm and a scraper on the other, means forurging said knife and scraper into engagement with opposite sides of thedisk of the plow, and means for adjusting the relative position of theknife and scraper with respect to the arms upon which they are mounted.

In a sharpening device for disk plows, in combination, a centralsupport, an arm carried thereby, a second arm pivotally connected withthe first arm, a knife on one arm and a scraper on the other, means forurging said knife and scraper into engagement with opposite sides of thedisk of the plow, and roller means carried by each arm engaging oppositesides of the disks.

6. In a sharpening device for disk plows, in combination, a centralsupport, an arm *arried thereby, a second arm pivotally connected withthe first arm, a knife on one arm and a scraper on the other, means forurging said knife and scraper into engagement with opposite sides of thedisk of the plow, roller means carried by each arm engaging oppositesides of the disks, and means for adjusting the relative position of theknife and scraper with respect to the arms upon which they are mounted.

In testimony whereof I atliX my signature in presence of two witnesses.

MERRELL WV. BROWNING. lVitnesses Oscar MALMBEG, F. A. SMITH.

Gopies of this patent may be obtained for five cents each, by addressingthe Commissioner of -Patents. Washington, D. C.

